User Story: Transaction Interface for Carol, Cashier
Title: Processing Transactions with Confidence and Accessibility
As a cashier named Carol,
I want to use the transaction interface to process payments accurately on my computer, with a design that’s easy to see and use,
So that I can keep my job running smoothly and feel confident, even as my vision and hands aren’t as steady as they used to be.
Persona Details:
I’m a grandmother who’s learning technology with help from my grandkids—they’ve shown me tricks like enlarging text in my browser.
I’m starting to have trouble reading small print because of macular degeneration, and I’ve got a slight tremor in my hands that makes clicking tricky sometimes.
I’m a cashier, so I need to handle transactions quickly and correctly for customers relying on our medical tech services.
Acceptance Criteria:
Large Text by Default: The interface uses big, bold text (at least 18px) that I can still enlarge further with my browser’s zoom feature (up to 150-200%) without breaking the layout.
High Visibility: Buttons and fields have strong contrast (e.g., black text on white or yellow highlights) so I can spot them despite my macular degeneration.
Tremor-Friendly Design: Buttons are large (at least 1-inch wide on-screen) and spaced out, so I can click them easily even if my hand shakes a little.
Simple Workflow: The process is straightforward—e.g., “Scan item,” “Enter amount,” “Confirm”—with no tiny dropdowns or hidden options that are hard to find or tap.
Visual Feedback: When I click something, it lights up or changes color, so I know I hit the right spot despite my tremor.
Error Tolerance: If I make a mistake (e.g., double-click by accident), the system doesn’t crash—it either ignores it or gives me a clear, big-text warning like “Please enter a valid amount.”
Success Confirmation: After a transaction, I see a huge “Payment Complete” message (and maybe hear a chime), so I’m sure it worked.
User Story: Transaction Interface for Carol, Cashier
Title: Processing Transactions with Confidence and Accessibility
As a cashier named Carol,
I want to use the transaction interface to process payments accurately on my computer, with a design that’s easy to see and use,
So that I can keep my job running smoothly and feel confident, even as my vision and hands aren’t as steady as they used to be.
Persona Details:
I’m a grandmother who’s learning technology with help from my grandkids—they’ve shown me tricks like enlarging text in my browser.
I’m starting to have trouble reading small print because of macular degeneration, and I’ve got a slight tremor in my hands that makes clicking tricky sometimes.
I’m a cashier, so I need to handle transactions quickly and correctly for customers relying on our medical tech services.
Acceptance Criteria:
Large Text by Default: The interface uses big, bold text (at least 18px) that I can still enlarge further with my browser’s zoom feature (up to 150-200%) without breaking the layout.
High Visibility: Buttons and fields have strong contrast (e.g., black text on white or yellow highlights) so I can spot them despite my macular degeneration.
Tremor-Friendly Design: Buttons are large (at least 1-inch wide on-screen) and spaced out, so I can click them easily even if my hand shakes a little.
Simple Workflow: The process is straightforward—e.g., “Scan item,” “Enter amount,” “Confirm”—with no tiny dropdowns or hidden options that are hard to find or tap.
Visual Feedback: When I click something, it lights up or changes color, so I know I hit the right spot despite my tremor.
Error Tolerance: If I make a mistake (e.g., double-click by accident), the system doesn’t crash—it either ignores it or gives me a clear, big-text warning like “Please enter a valid amount.”
Success Confirmation: After a transaction, I see a huge “Payment Complete” message (and maybe hear a chime), so I’m sure it worked.